Beetle resistance reported to Monsanto BT corn

Date:08-30-2011

Researchers have confirmed that the virgifera beetle has developed a resistance to some of Monsanto’s genetically-engineered corn seed.

Resistance developed in fields where the same genetically-engineered corn had been grown three years in a row, a relatively rare occurrence. Farmers have tended to switch fields annually between corn and soybeans to reduce nitrogen use and maximize both corn and soybean yields.

However, with record corn prices and increasing demand for corn, more corn acres, especially “corn on corn” repeated plantings, have occurred this year.

Scientists have warned that a danger in the use of genetically-engineered corn and soybeans comes with resistance by both pests and herbicides.

Researchers are watching closely signs of resistance by some weeds to Monsanto’s Roundup Herbicide. The problem has been more prevalent in the south but ISU researchers have warned that the problem is likely to spread.

Source: Des Moines Register